1. Add loud and annoying sound effects to your game
2. Don’t add sound control options so we have to listen to your loud and annoying sound effects
3. Make your game ridiculously hard
4. Have a confusing menu system
5. Forget to embed all of your dynamic textfields
6. Don’t optimize your code
7. Add a bunch of cool effects that require lots of processing power and slow down the gaming experience
8. Don’t fix the bugs
9. Have long animations that we can’t skip
10. Don’t give us a clear goal to beat the game
11. Add glow effects to everything
12. Make confusing controls
13. Make the instructions all text with no explanatory pictures/diagrams
14. Make a storyline without graphics to explain it
15. Make it easy for us to cheat
16. Create an ugly color scheme
17. Make the text unreadable
18. Don’t let the buttons look like buttons, we’ll obviously find them very easily
19. Don’t fix the typos
20. Very repetitive game-play
21. Don’t let us pause the game
22. Add pointless features that add a lot of file size
23. Make a really long menu system
24. Make us have to navigate through the entire menu system after we lose the game
25. Camouflage the enemies so we can’t see them until we randomly begin losing health or lose the game
26. Don’t put rollOver functions onto your buttons
27. Make game-play really slow
28. Make loss inevitable
29. Don’t put in a scoring system. We don’t want to know how well we did
30. Make stupid computer AI
31. Make the description of the game really short or really obscure
32. Design a game-play that has been exploited by multiple game designers before
33. Design graphics that have an uneven quality when seen on a mobile screen
34. When run on multiple devices, game scales non uniformly showing objects off screen
35. Don’t worry about rectifying text that looks blurred
36. Advanced levels with really short and easy game-play
37. Don’t let us change game options like sound control and quality during a game-play
38. A bad copy of a popular game
39. A cluttered HUD (Heads-Up Display)
40. Game which are not self explanatory, makes me want to refer to help even after starting playing the game

Of course, these are just guidelines; there may be exceptions to items in the list depending on a particular piece of content